linux-kernel - Re: [PATCH] Bluetooth USB: fix kernel panic during suspend

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Date:	Sat, 14 Feb 2009 13:53:22 +0100
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Greg KH <greg@...ah.com>
Cc:	Colin Ian King <colin.king@...onical.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Bluetooth USB: fix kernel panic during suspend - 2.6.24

Hi Greg,

> > The kernel panics when hci_usb_tx_complete() calls _urb_unlink()
> > on an _urb which has been previously been removed from a list.
> > This occurs during suspend while audio is being streamed to
> > a bluetooth headset.
> > 
> > The panic occurs because hci_usb_suspend() dequeues _urb
> > and then calls usb_kill_urb() - instead it should put _urb on
> > the killed list first before killing the urb.
> > 
> > Also added a spin_lock around the list_add operation.
> > 
> > Signed-off-by: Colin Ian King <colin.king@...onical.com>
> 
> Is this still an issue on a supported-by-the-community kernel (.27, .28,
> .29)?

starting with 2.6.29 the hci_usb driver has been replaced by btusb.

Regards

Marcel


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